Encyclopedias, Almanacs, Transcripts, and Maps
- Adelaide of Vilich, St.
- Adelantados
- Adelelm of Burgos, St.
- Adelhelm I, Bl.
- Adelkind, Israel Cornelius
- Adelman, Uri
- Adelphus of Metz, St.
- Adelson, Howard Laurence
- Adelstein-Rozeanu, Angelica
- Adenauer, Konrad°
- Adeni, Solomon Bar Joshua
- Adenulf of Anagni
- Adeodatus (Deusdedit) II, Pope
- Aderca, Felix
- Adeste Fideles
- Adhan
- Adiabene
- Adjiman
- Adjutor, St.
- Adler